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材料导报  2025, Vol. 39 Issue (6): 24020060-7    https://doi.org/10.11896/cldb.24020060
  无机非金属及其复合材料 |
吸收主导型Ni/Ni@Ag/EP电磁屏蔽涂层的制备及性能
汤云1,*, 习敏娟1, 王许辉1, 邓乐淳2, 陈强2,*
1 西安建筑科技大学材料科学与工程学院,西安 710055
2 西北工业大学材料学院,西安 710072
Preparation and Properties of Absorption-dominated Ni/Ni@Ag/EP Electromagnetic Shielding Coating
TANG Yun1,*, XI Minjuan1, WANG Xuhui1, DENG Lechun2, CHEN Qiang2,*
1 School of Materials Science and Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China
2 School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China
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摘要 为缓解海洋环境中电磁辐射困境,同时减少二次电磁波污染,开发耐腐蚀的吸收主导型电磁屏蔽涂层十分必要。本工作采用化学镀和冷喷涂法成功制备出具有高吸收、高电磁屏蔽效能和耐盐雾腐蚀的Ni/Ni@Ag/环氧树脂(EP)双层涂层。该涂层以高磁性Ni/EP层作为阻抗匹配吸收层,高导电性Ni@Ag/EP层作为反射层。因此,电磁波易于进入涂层内部,并通过吸收层中磁介电损耗的协同作用、反射层的反射,以及上下层界面的干涉效应等共同作用使电磁波衰减,最终所制备的Ni/Ni@Ag/EP涂层在X波段表现出高电磁屏蔽效能(均值为64.3 dB)和高吸收功率系数(0.74)。此外,盐雾试验和电化学阻抗谱结果证明了Ni/Ni@Ag/EP涂层良好的耐盐雾腐蚀性能。本工作的成果为设计适用于海洋环境、具有吸收主导特性的高效电磁屏蔽涂层提供了一种可行的策略。
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汤云
习敏娟
王许辉
邓乐淳
陈强
关键词:  电磁屏蔽  吸收主导型  双层结构  耐盐雾腐蚀  Ni@Ag    
Abstract: In order to alleviate the electromagnetic radiation dilemma in the marine environment and reduce the secondary electromagnetic wave pollution, it is necessary to develop an absorption-dominated electromagnetic shielding coating with corrosion resistance. In this work, Ni/Ag-coated Ni (Ni@Ag)/epoxy resin (EP) double-layer coating with high absorption, high electromagnetic interference shielding effectiveness (EMI SE) and good salt spray corrosion resistance was successfully prepared by electroless plating and cold spraying. The coating was constructed with high magnetic Ni/EP as the upper impedance matching absorption layer and high conductivity Ni@Ag/EP as the lower reflective layer. Therefore the electromagnetic wave was easy to enter the interior of the double-layer coating, and could be effectively attenuated by the synergistic effect of magnetic loss and dielectric loss in the absorption layer, the reflection effect of the reflective layer, and the interference effect of the interface. The ultimate product Ni/Ni@Ag/EP double-layer coating exhibited excellent average EMI SE of 64.3 dB and high absorption coefficient of 0.74 in X band. In addition, the salt spray test and electrochemical impedance spectroscopy results proved the satisfactory salt spray corrosion resistance of Ni/Ni@Ag/EP double-layer coating. The output of this study provides a feasible strategy for the design of efficient electromagnetic shielding coating with absorption-dominant characteristics serving in marine environment.
Key words:  electromagnetic shielding    absorption-dominated    double-layer structure    salt spray corrosion resistance    Ni@Ag
出版日期:  2025-03-25      发布日期:  2025-03-24
ZTFLH:  TB331  
基金资助: 陕西省杰出青年科学基金(2023-JC-JQ-35)
通讯作者:  *汤云,博士,西安建筑科技大学材料科学与工程学院教授、博士研究生导师。主要从事电磁屏蔽材料、钙钛矿量子点发光材料等方面的研究。
陈强,博士,西北工业大学材料学院副教授、博士研究生导师。主要从事特种电磁防护材料、仿生涂层材料等方面的研究。tangyun@xauat.edu.cn;chenqiang0213@126.com   
作者简介:  汤云,博士,西安建筑科技大学材料科学与工程学院教授、博士研究生导师。主要从事电磁屏蔽材料、钙钛矿量子点发光材料等方面的研究。
引用本文:    
汤云, 习敏娟, 王许辉, 邓乐淳, 陈强. 吸收主导型Ni/Ni@Ag/EP电磁屏蔽涂层的制备及性能[J]. 材料导报, 2025, 39(6): 24020060-7.
TANG Yun, XI Minjuan, WANG Xuhui, DENG Lechun, CHEN Qiang. Preparation and Properties of Absorption-dominated Ni/Ni@Ag/EP Electromagnetic Shielding Coating. Materials Reports, 2025, 39(6): 24020060-7.
链接本文:  
https://www.mater-rep.com/CN/10.11896/cldb.24020060  或          https://www.mater-rep.com/CN/Y2025/V39/I6/24020060
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